APR's Universal flight planning side of the wind triangle slide shows formulae for true course to compass headings as well as illustrated examples of east/west magnetic variation. Also displayed are definitions relevant to wind triangle problems and diagrams of true heading and true course solutions. The headwind and crosswind component grid depicts the relative wind angle in a graph for accurate and easy interpretation. Nautical and Statute scales for Sectional and WAC Charts are printed on the sides of the slide. APR''s student E6-B computers which are made with paper, composite, or fiber board, APR's student computers are made with PVC Plastic.